Weighting mean and variability during confidence judgments

PloS One
Vincent de Gardelle, Pascal Mamassian

Abstract

Humans can not only perform some visual tasks with great precision, they can also judge how good they are in these tasks. However, it remains unclear how observers produce such metacognitive evaluations, and how these evaluations might be dissociated from the performance in the visual task. Here, we hypothesized that some stimulus variables could affect confidence judgments above and beyond their impact on performance. In a motion categorization task on moving dots, we manipulated the mean and the variance of the motion directions, to obtain a low-mean low-variance condition and a high-mean high-variance condition with matched performances. Critically, in terms of confidence, observers were not indifferent between these two conditions. Observers exhibited marked preferences, which were heterogeneous across individuals, but stable within each observer when assessed one week later. Thus, confidence and performance are dissociable and observers' confidence judgments put different weights on the stimulus variables that limit performance.

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Citations

Jan 4, 2017·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·C PelofiD Pressnitzer
Nov 21, 2017·Nature Human Behaviour·Joaquin NavajasBahador Bahrami
Jul 5, 2018·Journal of Vision·Marta Suárez-PinillaWarrick Roseboom
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Feb 6, 2018·PloS One·Andrew W CorcoranSimon J Cropper
May 24, 2017·Annual Review of Vision Science·Pascal Mamassian
Apr 6, 2018·Scientific Reports·Marine HainguerlotVincent de Gardelle
Apr 11, 2020·Nature Communications·Tarryn BalsdonPascal Mamassian
Jun 20, 2020·Perception·Pascal Mamassian
Nov 21, 2020·Trends in Cognitive Sciences·Medha Shekhar, Dobromir Rahnev
Mar 22, 2021·Vision Research·Jinhyeok Jeong, Sang Chul Chong
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Jun 10, 2021·Journal of Vision·Matteo ToscaniMatteo Valsecchi
Sep 17, 2021·Scientific Reports·David Aguilar-Lleyda, Vincent de Gardelle
Aug 11, 2020·Cognition·Shannon M LockeMichael S Landy

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